@mixin wh($w, $h) {
  width: $w;
  height: $h;
}
.center {
  display: flex;
  align-items: center;
  justify-content: center;
}
.logo {
  height: 150px;
  @extend .center;
  img {
    width: 270px;
    height: 130px;
  }
}